codice:
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <time.h>

int main(int argc, const char *argv[]) {
	int i,j, length, size;

	if(argc!=3) {
		printf("Usage: randata <length> <size>\n");
		return 1;
	}

	srand(time(NULL));
	length=atoi(argv[1]);
	size=atoi(argv[2]);

	for(i=0; i<length; i++) {
		for(j=0; j<size; j++)
			printf("%c",toascii((rand()%(90-65+1))+65));
		printf("\n");
	}

	return 0;
}
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